<template>
  <div id="root">
    <div class="todo-container">
      <div class="todo-wrap">
        <TodoHeader :saveData="addTodo"></TodoHeader>
        <TodoList :todos="todos" :updateDone="updateTodo" :deleteItem="deleteTodo"></TodoList>
        <TodoFotter :todos="todos" :updateAllDone="updateAllTodo" :removeIsDone="deleteIsDoneTodo"></TodoFotter>
      </div>
    </div>
  </div>
</template>

<script>
import TodoHeader from "./components/TodoHeader.vue";
import TodoList from "./components/TodoList.vue";
import TodoFotter from "./components/TodoFotter.vue";

export default {
  name: "App",
  components: {
    TodoHeader,
    TodoList,
    TodoFotter,
  },
  data() {
    return {
      todos: [
        { id: "001", title: "吃饭", done: true },
        { id: "002", title: "睡觉", done: false },
        { id: "003", title: "打游戏", done: false },
        { id: "004", title: "逛街", done: true },
      ],
    }
  },
  methods: {
    addTodo(todoObj){
      // console.log('App组件接收到数据：',todoObj)
      // 添加到数组最前面
      this.todos.unshift(todoObj)
    },
    updateTodo(id){
      // console.log('App中改变状态：',id)
      // 修改指定ID的done值
      this.todos.forEach((todo) => {
        if(todo.id === id){
          todo.done = !todo.done;
        }
      })
    },
    deleteTodo(id){
      // this.todos = this.todos.filter((item) => {
      //   return item.id !== id
      // })
      // 简写
      this.todos = this.todos.filter(item => item.id !== id)
    },
    updateAllTodo(isAll) {
      this.todos.forEach(e => e.done = isAll)
    },
    deleteIsDoneTodo(){
      this.todos = this.todos.filter(item => !item.done)
    }
  }
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>
